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Operation
motor is affected by the boat/motor combina-
tion and the desired use. Test runs at differ-
ent heights can help determine the optimum
mounting height. Consult your Yamaha deal-
er or boat manufacturer for further informa-
tion on determining the proper mounting
height.
ECM01630
CAUTION:
During water testing, check the buoy-
G
ancy of the boat, at rest, with its maxi-
mum load. Check that the static water
level on the exhaust housing is low
enough to prevent water entry into the
power head when water rises due to
waves when the outboard is not run-
ning.
Incorrect engine height or obstructions
G
to the smooth flow of water (such as the
design or condition of the boat, or ac-
cessories such as transom ladders or
depth finder transducers) can create
airborne water spray while the boat is
cruising. If the motor is operated con-
tinuously in the presence of airborne
water spray, enough water could enter
the engine through the intake opening
on the cowling to cause severe engine
damage. Eliminate the cause of the air-
borne water spray.
42
EMU27041
Your new engine requires a period of break-
in to allow mating surfaces of moving parts to
wear in evenly. Correct break-in will help en-
sure proper performance and longer engine
life.
ECM00750
CAUTION:
Failure to follow the break-in procedure
G
could result in reduced engine life or
even severe engine damage.
Do not use premixed fuel in this engine
G
because it could cause carbon depos-
its on the fuel injector and engine trou-
ble.
ZMU01762
Follow the instructions for break-in
G
carefully.
NOTE:
Leave the label pictured below on the top
cowling until the break-in procedure has
been completed. It may be removed after-
wards.
Breaking in engine
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